Load Specifications
Load data in caliber 6.5 x 63 R Messner Mag. with .264 | 124gr | Apex Outdoors Afterburner bullet and 73 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, ReloadSwiss RS 76 and Winchester StaBALL HD.
Important Notice: DO NOT go below Minimum Charge or above Maximum Charge. Since we have no control over the equipment and components used, any responsibility and liability for the results achieved is rejected.
Only powders/loads that match the current filter criteria are displayed: max pressure of a load ≤ 90% of max. standardized pressure, fill rate ≥ 80% and propellant combustion ≥ 95%. Use the sliders above the tables to adjust these thresholds.
Charge: Powder weight in grains. Start with the minimum load and work up carefully.
FR (Fill Rate): Case fill as a percentage. Values above 100% mean compressed loads.
MaxP / %: Maximum chamber pressure in bar and as a percentage of the standardized maximum for this caliber.
V(0): Muzzle velocity in feet per second (fps) at the standardized barrel length.
z (Powder Burn): Estimated propellant combustion percentage at bullet exit.
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Max Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 92% | 55,492 psi | 87% | 3068 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 56,347 psi | 88% | 3097 fps | 100% |
| Accurate High Country | <<locked>> | 90% | 56,782 psi | 89% | 3228 fps | 99.2% |
| Accurate MAGPRO | <<locked>> | 92% | 57,580 psi | 90% | 3228 fps | 98.5% |
| ADI AR 2209 | <<locked>> | 90% | 56,884 psi | 89% | 3159 fps | 99.7% |
| ADI AR 2213 | <<locked>> | 92% | 54,578 psi | 86% | 3159 fps | 98.8% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 52,779 psi | 83% | 3120 fps | 98.9% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 47,427 psi | 74% | 3081 fps | 99.9% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 57,043 psi | 89% | 3153 fps | 99.7% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 57,043 psi | 89% | 3153 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 86% | 56,797 psi | 89% | 3153 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 56,391 psi | 88% | 3143 fps | 99.6% |
| Alliant Reloder-22 | <<locked>> | 92% | 54,911 psi | 86% | 3159 fps | 99.6% |
| Alliant Reloder-23 | <<locked>> | 94% | 56,304 psi | 88% | 3127 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 55,825 psi | 87% | 3196 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 57,014 psi | 89% | 3225 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 56,115 psi | 88% | 3114 fps | 96.7% |
| Bofors RP15 | <<locked>> | 94% | 54,128 psi | 85% | 3143 fps | 99.5% |
| Bofors RP30ᴾ | <<locked>> | 100% | 55,593 psi | 87% | 3199 fps | 99.4% |
| Bofors RP5 | <<locked>> | 92% | 54,911 psi | 86% | 3159 fps | 99.6% |
| Bofors RP7 | <<locked>> | 82% | 54,534 psi | 85% | 3038 fps | 99.8% |
| Hodgdon H1000 | <<locked>> | 98% | 54,288 psi | 85% | 3150 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 84% | 57,638 psi | 90% | 3153 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 56,188 psi | 88% | 3104 fps | 99.7% |
| Hodgdon H4831 | <<locked>> | 90% | 54,578 psi | 86% | 3097 fps | 98.3% |
| Hodgdon H4831 SC | <<locked>> | 92% | 57,014 psi | 89% | 3136 fps | 98.7% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 57,319 psi | 90% | 3071 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 54,621 psi | 86% | 3274 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 54,215 psi | 85% | 3127 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,362 psi | 59% | 1969 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 56,014 psi | 88% | 3077 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 82% | 55,811 psi | 87% | 3061 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 56,536 psi | 89% | 3087 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 55,521 psi | 87% | 3081 fps | 98.6% |
| IMR 7828 SSC | <<locked>> | 94% | 56,420 psi | 88% | 3202 fps | 99.1% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 42,946 psi | 67% | 2979 fps | 96.9% |
| Lovex S065 | <<locked>> | 84% | 56,826 psi | 89% | 3064 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 55,100 psi | 86% | 3061 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 56,594 psi | 89% | 3084 fps | 100% |
| Norma 204 | <<locked>> | 86% | 57,319 psi | 90% | 3140 fps | 99.6% |
| Norma 217ᴾ | <<locked>> | 100% | 43,352 psi | 68% | 3012 fps | 99% |
| Norma MRP | <<locked>> | 90% | 54,984 psi | 86% | 3182 fps | 100% |
| Norma URP | <<locked>> | 84% | 54,549 psi | 85% | 3077 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 57,232 psi | 90% | 3225 fps | 99.5% |
| Ramshot Hunter | <<locked>> | 86% | 57,014 psi | 89% | 3140 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 55,825 psi | 87% | 3153 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,159 psi | 60% | 2014 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 56,173 psi | 88% | 3120 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 54,302 psi | 85% | 3146 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 55,419 psi | 87% | 3268 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 54,723 psi | 86% | 3219 fps | 98.3% |
| Rottweil R 904 | <<locked>> | 88% | 54,331 psi | 85% | 3064 fps | 98.8% |
| Rottweil R 905 | <<locked>> | 90% | 55,956 psi | 88% | 3133 fps | 99.7% |
| Rottweil R 907 | <<locked>> | 82% | 54,534 psi | 85% | 3038 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 84% | 56,826 psi | 89% | 3064 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 55,100 psi | 86% | 3061 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 55,767 psi | 87% | 3009 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 55,521 psi | 87% | 3130 fps | 99.6% |
| Somchem S361 | <<locked>> | 88% | 55,724 psi | 87% | 3054 fps | 98.4% |
| Somchem S365 | <<locked>> | 86% | 55,085 psi | 86% | 3081 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 56,724 psi | 89% | 3107 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 82% | 56,637 psi | 89% | 2995 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 56,130 psi | 88% | 3068 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 56,101 psi | 88% | 3084 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 84% | 55,288 psi | 87% | 3071 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 55,187 psi | 86% | 3107 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 54,636 psi | 86% | 3176 fps | 98.5% |
| Vihtavuori N565 | <<locked>> | 96% | 55,013 psi | 86% | 3159 fps | 98.8% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 55,376 psi | 87% | 3219 fps | 97.9% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 55,637 psi | 87% | 3018 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 54,230 psi | 85% | 3097 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 94% | 54,636 psi | 86% | 3219 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 56,405 psi | 88% | 3100 fps | 99.6% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 80% | 37,333 psi | 59% | 2723 fps | 98.4% |
| Accurate 4350 | <<locked>> | 80% | 49,356 psi | 77% | 2986 fps | 100% |
| Accurate High Country | <<locked>> | 80% | 40,030 psi | 63% | 2890 fps | 95.6% |
| Accurate MAGPRO | <<locked>> | 84% | 43,555 psi | 68% | 2959 fps | 95.3% |
| ADI AR 2209 | <<locked>> | 80% | 40,886 psi | 64% | 2851 fps | 97% |
| ADI AR 2213 | <<locked>> | 84% | 41,756 psi | 65% | 2900 fps | 95.9% |
| ADI AR 2217 | <<locked>> | 92% | 40,524 psi | 64% | 2867 fps | 95.9% |
| ADI AR 2225 | <<locked>> | 88% | 32,329 psi | 51% | 2703 fps | 95.8% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 41,350 psi | 65% | 2854 fps | 97.1% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 41,350 psi | 65% | 2854 fps | 97.1% |
| Alliant Reloder-16 | <<locked>> | 80% | 46,688 psi | 73% | 2982 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 40,973 psi | 64% | 2844 fps | 97% |
| Alliant Reloder-22 | <<locked>> | 80% | 36,941 psi | 58% | 2789 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 35,621 psi | 56% | 2749 fps | 99.9% |
| Alliant Reloder-25 | <<locked>> | 80% | 31,038 psi | 49% | 2657 fps | 97.1% |
| Alliant Reloder-26 | <<locked>> | 80% | 39,378 psi | 62% | 2904 fps | 99.7% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 49,603 psi | 78% | 2992 fps | 95% |
| Bofors RP15 | <<locked>> | 82% | 36,709 psi | 58% | 2779 fps | 95.6% |
| Bofors RP30 | <<locked>> | 88% | 37,144 psi | 58% | 2822 fps | 95.1% |
| Bofors RP5 | <<locked>> | 80% | 36,941 psi | 58% | 2789 fps | 95.8% |
| Bofors RP7 | <<locked>> | 80% | 51,343 psi | 80% | 2982 fps | 99.6% |
| Hodgdon H1000 | <<locked>> | 88% | 38,696 psi | 61% | 2825 fps | 95.9% |
| Hodgdon H414 | <<locked>> | 80% | 50,560 psi | 79% | 3031 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 80% | 52,895 psi | 83% | 3045 fps | 99.4% |
| Hodgdon H4831 | <<locked>> | 82% | 41,669 psi | 65% | 2844 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 84% | 43,758 psi | 69% | 2887 fps | 95.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 44,324 psi | 69% | 2861 fps | 100% |
| Hodgdon Retumbo | 57.6 gr | 84% | 34,461 psi | 54% | 2802 fps | 95.4% |
| Hodgdon Superformance | <<locked>> | 80% | 50,444 psi | 79% | 3061 fps | 99.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,036 psi | 44% | 1762 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 46,630 psi | 73% | 2910 fps | 99% |
| IMR 4451 Enduron | <<locked>> | 80% | 52,373 psi | 82% | 3005 fps | 99.8% |
| IMR 4831 | <<locked>> | 80% | 46,630 psi | 73% | 2923 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 40,625 psi | 64% | 2785 fps | 95.1% |
| IMR 7828 SSC | <<locked>> | 84% | 40,205 psi | 63% | 2877 fps | 95.5% |
| IMR 8133 Enduron | <<locked>> | 96% | 37,797 psi | 59% | 2858 fps | 95.1% |
| Lovex S065 | <<locked>> | 80% | 50,270 psi | 79% | 2953 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 48,660 psi | 76% | 2946 fps | 99.6% |
| Lovex S071 | <<locked>> | 80% | 32,256 psi | 51% | 2595 fps | 96.8% |
| Norma 204 | <<locked>> | 80% | 46,717 psi | 73% | 2949 fps | 98.2% |
| Norma 217 | <<locked>> | 92% | 33,243 psi | 52% | 2759 fps | 95.7% |
| Norma MRP | <<locked>> | 80% | 38,624 psi | 61% | 2858 fps | 97.8% |
| Norma URP | <<locked>> | 80% | 47,993 psi | 75% | 2966 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 40,118 psi | 63% | 2887 fps | 95.9% |
| Ramshot Hunter | <<locked>> | 80% | 46,659 psi | 73% | 2963 fps | 99.7% |
| Ramshot Magnum | <<locked>> | 82% | 33,475 psi | 52% | 2694 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,601 psi | 45% | 1801 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 49,182 psi | 77% | 3005 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 47,094 psi | 74% | 3022 fps | 100% |
| ReloadSwiss RS 76 | 60.2 gr | 82% | 31,473 psi | 49% | 2707 fps | 95.1% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 43,743 psi | 69% | 3005 fps | 95.7% |
| Rottweil R 904 | <<locked>> | 80% | 42,134 psi | 66% | 2825 fps | 96.2% |
| Rottweil R 905 | <<locked>> | 80% | 40,451 psi | 63% | 2835 fps | 97% |
| Rottweil R 907 | <<locked>> | 80% | 51,343 psi | 80% | 2982 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 50,270 psi | 79% | 2953 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 48,660 psi | 76% | 2946 fps | 99.6% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 49,182 psi | 77% | 2897 fps | 99.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 40,103 psi | 63% | 2828 fps | 96.9% |
| Somchem S361 | <<locked>> | 80% | 42,888 psi | 67% | 2812 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 45,266 psi | 71% | 2920 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 41,089 psi | 64% | 2815 fps | 98% |
| Vihtavuori N150 | <<locked>> | 80% | 53,345 psi | 84% | 2949 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 49,414 psi | 77% | 2959 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 35,665 psi | 56% | 2680 fps | 96% |
| Vihtavuori N550 | <<locked>> | 80% | 48,878 psi | 77% | 2963 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 39,987 psi | 63% | 2831 fps | 99.9% |
| Vihtavuori N560 | <<locked>> | 82% | 41,568 psi | 65% | 2913 fps | 95.4% |
| Vihtavuori N565 | <<locked>> | 86% | 39,378 psi | 62% | 2848 fps | 95% |
| Vihtavuori N568 | <<locked>> | 94% | 44,991 psi | 71% | 3018 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 48,370 psi | 76% | 2907 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 50,792 psi | 80% | 3035 fps | 99.8% |
| Winchester StaBALL HD | 56.3 gr | 80% | 31,821 psi | 50% | 2779 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 37,449 psi | 59% | 2730 fps | 95.9% |
Recommended = one of the top powders for this cartridge and bullet combination.
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 73 powders for 6.5 x 63 R Messner Mag. loaded with the .264 | 124gr | Apex Outdoors Afterburner. Hodgdon Retumbo delivers the highest muzzle velocity at 3,274 fps; across all powders the maximum-charge window runs from 1,969 fps to 3,274 fps. ADI AR 2217 gives the best case fill at 100 %, and 73 of the 73 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 59–90 %, leaving at least 10 % headroom. The 124.0 gr projectile in 0.264" calls for a 1:7.5 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Bofors RP30 reach 100 % fill or more at maximum charge, so these are compressed loads: they need a long drop tube to seat cleanly and react sensitively to the case capacity of your own brass lot. Hodgdon Retumbo, ReloadSwiss RS 76, Winchester StaBALL HD rank at the top here: for 6.5 x 63 R Messner Mag. with the .264 | 124gr | Apex Outdoors Afterburner they combine a high case fill with complete burn and sit in the upper velocity band. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.